Note: the equipment of the 21st battalion was partially non-typical. It had 5 field cars Laffly (4x4, not known model), 2 French workshop trucks Renault and Latil (not known model), 22 obsolete trucks 3t Berliet CBA (4x2) and some modern trucks 2t Praga RV (6x4) and Chevrolet (4x2).

The newly formed 21st Light Tank Battalion was organised in
French pattern, and was in Polish C-in-C reserve.
It was not entirely organised when the war broke out and,
unfortunately, was not used in combat. By the C-in-C orders it was withdrawn to Romania.

Armoured Unit (or Battalion)

(Dywizjon pancerny)

Polish name: "dywizjon", not to confuse it with a division (Polish: "dywizja"), was a Cavalry name of a battalion level unit
(like German: "Abteilung"). Like all Polish wartime units, these units were newly mobilized in August 1939 and should not be confused with pre-war peacetime armoured battalions (batalion pancerny). These armoured units were reconnaissance ones, assigned to Cavalry Brigades.

8 armoured cars wz.34 or wz.29 and 13
tankettes TK or TKS.

Unit HQ:

-

1 armoured car

Reconnaissance Tank Squadron:

- HQ troop:

1 TK /TKS tankette

- 2 troops:

5 * TK /TKS tankettes

5 * TK /TKS tankettes

- reserve tanks: *

2 * TK /TKS tankettes

Armoured Car Squadron:

- HQ troop:

1 armoured car

- 2 troops:

3 armoured cars

3 armoured cars

Maintenance squadron

* some sources do not mention reserve tankettes, and count 6 tankettes in platoon.

Two similar reconnaissance tank companies were assigned to the motorized brigades. The 101st company (9 tankettes TK and 4 TKS with 20mm guns) was assigned to the 10.BK, the 11th company (tankettes TKS, 2 with 20mm guns) - to the WBP-M. They had less auxuiliary equipment, and a personnel of 3 officers and 50 soldiers. In WBP-M, both platoons of the 11th company were distributed between two motorized regiments (this company had no commanding tankette).
Each of these brigades had also its organic reconnaissance tank squadron in the Brigade's reconnaissance battalion. This squadron also had 13 tankettes and a similar organization (in WBP-M: 1 filed car, 1 radio van, 4 motorcycle combination, 1 motorcycle solo, 3 trucks, 1 field kitchen; 3 officers, 52 soldiers). The squadron of the 10.BK was equipped with 9 tankettes TKF and 4 TKS with 20mm guns, the squadron of the WBP-M - with TKS tankettes, 2 with 20mm guns.

Independent reconnaissance tank companies were initially assigned to the following units:

There were three Renault FT-17 companies, nos: 111, 112 and 113.
Their combat use was very limited since the tanks were very obsolete and slow.
The latter two companies were fighting in defence of the Citadel in Brzesc (see on a page Renault FT-17).